aubio_wavetable_t *new_aubio_wavetable(uint_t samplerate, uint_t blocksize)
{
uint_t i = 0;
aubio_wavetable_t *s = AUBIO_NEW(aubio_wavetable_t);
if ((sint_t)samplerate <= 0) {
AUBIO_ERR("Can not create wavetable with samplerate %d\n", samplerate);
goto beach;
}
s->samplerate = samplerate;
s->blocksize = blocksize;
s->wavetable_length = WAVETABLE_LEN;
s->wavetable = new_fvec(s->wavetable_length + 3);
for (i = 0; i < s->wavetable_length; i++) {
s->wavetable->data[i] = SIN(TWO_PI * i / (smpl_t) s->wavetable_length );
}
s->wavetable->data[s->wavetable_length] = s->wavetable->data[0];
s->wavetable->data[s->wavetable_length + 1] = s->wavetable->data[1];
s->wavetable->data[s->wavetable_length + 2] = s->wavetable->data[2];
s->playing = 0;
s->last_pos = 0.;
s->freq = new_aubio_parameter( 0., s->samplerate / 2., 10 );
s->amp = new_aubio_parameter( 0., 1., 100 );
return s;
beach:
AUBIO_FREE(s);
return NULL;
}
int main (void)
{
smpl_t max_value = 100.;
smpl_t min_value = 0.;
uint_t steps = 10;
aubio_parameter_t * param = new_aubio_parameter ( min_value, max_value, steps );
PRINT_MSG("initial value: %f, steps: %d\n", aubio_parameter_get_current_value
(param) , aubio_parameter_get_steps (param) );
PRINT_MSG("target: max_value / 2\n");
aubio_parameter_set_target_value ( param, max_value );
get_some_steps ( param );
PRINT_MSG("target: max_value / 2\n");
aubio_parameter_set_target_value ( param, max_value / 2 );
get_some_steps ( param );
PRINT_MSG("target: max_value * 2\n");
aubio_parameter_set_target_value ( param, max_value * 2);
get_some_steps ( param );
PRINT_MSG("steps: 1, target: -max\n");
aubio_parameter_set_steps ( param, 1);
aubio_parameter_set_target_value ( param, - max_value);
get_some_steps ( param );
PRINT_MSG("steps: 30, current value: max, target: min\n");
aubio_parameter_set_current_value ( param, max_value );
aubio_parameter_set_target_value ( param, min_value );
aubio_parameter_set_steps ( param, 7 );
get_some_steps ( param );
PRINT_MSG("steps: 30, max value: max * 2, min value: -max, current value: -max, target: max\n");
aubio_parameter_set_min_value ( param, - max_value );
aubio_parameter_set_max_value ( param, 2. * max_value );
aubio_parameter_set_current_value ( param, - max_value );
aubio_parameter_set_target_value ( param, max_value );
aubio_parameter_set_steps ( param, 10 );
get_some_steps ( param );
del_aubio_parameter (param);
return 0;
}
